Okay, guys, report me to the mods to be blocked, if you want. But a very hurt and angry lady just told me about how fantastic her mother usually is, and that Mom betrayed her trust. All in the same post. She's a great Mom. Did something hugely wrong. No doubt. OP has every right to be furious, I don't blame her, and totally support her outrage.

OP, your sister, clearly, is a bitch, and you have every right to be pissed at her too, but you're already at NC. There's not much else to do.

So. My question is this: is Mom in the HABIT of betraying trust? You've described such a fantastic Mom. And you're clearly close, especially in light of what your family has gone through. Have you asked WHY Mom would breach the trust, in her, that you seem to have had before? Or am I misunderstanding what you describe?